filament roll holder

There are many other holders for filament rolls. The one I have is good, but a little bit to big and overhanging.
So I decided to change the design. Now it is shorter. The center of the roll is approximately 15 mm from the fixing point away. The holder is set for rolls with diameter of 205 mm.
The rod for the filament roll shoud be max. 8 mm in diameter.
For centering the roll it self I have an other part. Look for FILAMENTROLLENZENTRIERER.

Edit:
I found out that in the maximum position t